Proper setup of simulator for linux

[kartun83]

Hello.
I'm having trouble setting up simulator in linux mint.

• I followed the instructions from https://docs.zepp.com/docs/guides/tools/simulator/setup/#linux-version-installation
• Simulator without root starts ok and allow to download images and communicate with zeus
• Simulator with root, started with sudo ./simulator --no-sandbox throws lots of errors and display just black screen
  simulator.log
• I'm able to separately start qemu with sudo /opt/simulator/resources/firmware/start_qemu.sh ZEPP_FW_DIR=/home/kartun/.zepp/emulator_cache/e5d9ef031bef6797a6d10506ca25e493, but obviously it doesn't have any apps in it
• Launching from simulator window shows only "debug window"
  
  

Also it spam with message: inject stop because application is inconsistent with the watch simulator model, I checked app.json, and it have definitions for GTR4 and GTS4, and this images are downloaded.
Please advice how to setup this in linux ?

[kartun83]

Progress so far

For some reason it's listed in docs you could change owner of simulator to yourself, but it's totally not sufficient.
If you check scripts inside /opt/simulator/resources/firmware/qemu_linux both up and down scripts still require root.

One option is to precreate tap0 interface:
sudo apt-get install uml-utilities && sudo nano /etc/network/interfaces

and put this inside:

auto tap0
iface tap0 inet static
address 192.168.166.1
netmask 255.255.255.0
pre-up /usr/bin/tunctl -t tap0 -u <username>

Replace <username> with your desired user.
Reboot and check with ifconfig | grep "tap0"

---

As you already have "tap0" interface up and running some fixes could be applied to qemu scripts:
open qemu-ifup and qemu-ifdown, find all strings staring with sudo and comment them, as they are no longer required.

for qemu-ifup it should be like this:

#!/bin/sh

echo network interface $1 ip 192.168.166.1 netmask 255.255.255.0
#sudo ifconfig $1 192.168.166.1 netmask 255.255.255.0

echo network interface $1 up
#sudo ifconfig $1 up

So, currently you should be able to start qemu without root like this:
cd /opt/simulator/resources/firmware ./start_qemu.sh ZEPP_FW_DIR=~/.zepp/emulator_cache/<UUID>

search for correct <UUID> inside ~/.zepp/emulator_cache (assuming you downloaded some images from simulator)

Anyway still doesn't launch qemu from simulator ... :(

[jiaolaibin]

For the problem that qemu cannot be launched from simulator:

Did you not select any products?
You need to click the button in the green box to download the product that needs to be simulated.

[kartun83]

imho simulator should display some kind of warning in human readable form instead of stack trace.

[MyoungXUE]

Thank you for your feedback, I will feedback this issue to the relevant colleagues.

[MyoungXUE]

Has the problem been solved?

[kartun83]

partially. Please add parameter to simulator to launch qemu without sudo.